Is UNIX an open source OS ? Post: 302911251

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Operating Systems Linux Fedora Is UNIX an open source OS ? Post 302911251 by Don Cragun on Wednesday 30th of July 2014 05:34:57 PM

07-30-2014

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Quote:

Originally Posted by Corona688

Most of your criticisms are quite true! But this one hasn't been true for 10 years. The old threading model -- which amounted to cloned processes sharing the same memory segments -- got thrown out when someone found a big design flaw, they replaced it with NPTL. That means "native POSIX threading library". I expect that's a fair bit closer to compliance.

I expect it would be quite a lot easier for an OS to become POSIX compliant if the tests were easier to get.

Thanks for letting me know. I said: many GNU Utilities are coming closer to meeting POSIX requirements.
I should have said: many GNU Utilities, Linux libraries, and the Linux kernel are coming closer to meeting POSIX requirements.

Surprisingly enough, the vendors who fund the development and maintenance of the UNIX and POSIX conformance test suites so that their systems can be branded or certified haven't accepted the idea that they should give away the test suites so their competitors in the open source community will have an easier time putting them out of business. Nonetheless, I believe some Linux distro vendors do occasionally pay The Open Group to run the tests for them to see what areas still need work to actually become POSIX certified or UNIX branded. Certification or branding will happen some day, but we aren't there yet.

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dpkg-reconfigure

DPKG-RECONFIGURE(8)                                                   Debconf                                                  DPKG-RECONFIGURE(8)

NAME

       dpkg-reconfigure - reconfigure an already installed package

SYNOPSIS

        dpkg-reconfigure [options] packages

DESCRIPTION

       dpkg-reconfigure reconfigures packages after they have already been installed. Pass it the names of a package or packages to reconfigure.
       It will ask configuration questions, much like when the package was first installed.

       If you just want to see the current configuration of a package, see debconf-show(1) instead.

OPTIONS

       -ftype, --frontend=type
           Select the frontend to use. The default frontend can be permanently changed by:

            dpkg-reconfigure debconf

           Note that if you normally have debconf set to use the noninteractive frontend, dpkg-reconfigure will use the dialog frontend instead,
           so you actually get to reconfigure the package.

       -pvalue, --priority=value
           Specify the minimum priority of question that will be displayed.  dpkg-reconfigure normally shows low priority questions no matter what
           your default priority is. See debconf(7) for a list.

       --default-priority
           Use whatever the default priority of question is, instead of forcing the priority to low.

       -u, --unseen-only
           By default, all questions are shown, even if they have already been answered. If this parameter is set though, only questions that have
           not yet been seen will be asked.

       --force
           Force dpkg-reconfigure to reconfigure a package even if the package is in an inconsistent or broken state. Use with caution.

       --no-reload
           Prevent dpkg-reconfigure from reloading templates. Use with caution; this will prevent dpkg-reconfigure from repairing broken templates
           databases.  However, it may be useful in constrained environments where rewriting the templates database is expensive.

       -h, --help
           Display usage help.

SEE ALSO

       debconf(7)

AUTHOR

       Joey Hess <joeyh@debian.org>

                                                                    2018-02-28                                                 DPKG-RECONFIGURE(8)